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Individual Calculations July 2009 |
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| Campos Sanchez, Roberto Total change: -19.50 | |   |
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| Copa Parque del Norte | San José | CRC | 2009-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2114 | 2108 | 1.00 | 3 | -0.52 | 15 | -7.80 | |
|  Gomez Huertas, Stanley | | | 2007 | CRC | 0.50 | 1 | -0.14 | 15 | -2.10 | |  Duran Vega, Andres | | | 1933 | CRC | 0.50 | 1 | -0.23 | 15 | -3.45 | | | Valdes Romero, Leonardo | m | | 2403 | CRC | 0.00 | 1 | -0.15 | 15 | -2.25 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | Costa Rican National Championship Phase 1.2 | Moravia | CRC | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2057 | 2108 | 1.50 | 4 | -0.78 | 15 | -11.70 | |
| | Murillo Ortiz, Gustavo | | | 1987 | CRC | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Alfaro, Carlos | | | 2104 | CRC | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Leandro, Jhonny | | | 2100 | CRC | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Solano Lopaz, Royner | | | 2038 | CRC | 0.50 | 1 | -0.10 | 15 | -1.50 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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